Ashrae Journal - November 2008 - B18

monitoring equipment into our BACnet systems. Since BACnet is readily available, we only specify equipment with BACnet communications interfaces. We try to limit our controls manufacturer to one per building, but in some cases we have several. In these instances, the mix has been in terminal equipment applications, which are all integrated using BACnet. Remote communications using wireless and Web services has long since replaced the telephone modem and has allowed more stake holders access to the system. As previously stated, we work closely with our IT department to ensure that the communications are reliable and secure. As we introduced BACnet, we soon realized that we needed to provide the facilities organization with a roadmap for management of a diversified controls solution. As part of the College’s Figure 2: Typical college controls network diagram. master planning efforts we developed a D50318asjl_703523a:D50318asjl_703523a 9/23/08 7:44 AM Page 1 controls master plan. This plan includes a survey of existing schematic plan for replacement and retrofits. The plan provides college buildings, the type and condition of their controls, and a guidance to designers through standard controls specifications, controls drawings with narrative and graphical logic diagrams of sequences of operations, typical college controls network arrangements, and system commissioning and documentation requirements. Future work will include input from the O&M staff on training and routine maintenance requirements, as well as formats for standard service contracts. College-wide we have allowed five different BACnet manufacturers. Only three manufacturers are allowed on each campus to reduce complexity while ensuring competition. In each new installation, vendors are required to provide a completely functional stand-alone system including all required software CHILLER TUBE CLEANERS tools to manipulate and operate the system. Once functionalFOR SMOOTH AND ENHANCED TUBES ity is tested as part of our commissioning process, VLAN IP Goodway’s line of Ream-A-Matics® makes tough tube cleaning a simple, addresses are assigned, communications are established on one-person operation. Each machines uses a variety of quick connect our MC WAN and graphics and other tools are mirrored on brushes and cleaning tools mounted to the tip of a rotating flexible shaft, along with a simultaneous water flush, to remove deposits. Both electric to other College operator workstations to provide functional and air powered units are available, as well as units with reversible shaft flexibility for operations staff. Servers located on the MC rotation, a shaft feeder gun, chemical injection, and WAN also provide Web services to other users such as remote a 500 PSI power flush. So the next time you need to clean your chiller — clean it the good way. access via the World Wide Web. To find out more, call Goodway today at BACnet has revolutionized the building automation industry 800-333-7467, or visit us online at and has become a household name at Montgomery College. The www.goodway.com. dedicated efforts of the volunteer members of the ASHRAE BACnet Standard committee, who developed the protocol, have provided users like me a much needed tool, which has greatly enhanced our ability to provide a diversified, competitive, and integrated controls solution. Manufacturers, vendors, designers, owners, and operators have responded to BACnet’s influence and we are just seeing a glimpse of the benefits and opportunities www.goodway.com Innovative Maintenance Solutions that are presenting themselves. CRITICAL CLEANING DEMANDS GOODWAY. ® www.info.hotims.com/16019-26 B18 B A C n e t ® To d a y | A S u p p l e m e n t t o A S H R A E J o u r n a l November 2008

Ashrae Journal - November 2008

Table of Contents for the Digital Edition of Ashrae Journal - November 2008